Swimming in San Diego in december 2026: Average sea temperature in december and tide times in december 2026
Average sea temperature in San Diego in december 2026.
In december, according to seasonal norms, the sea temperature in San Diego is:
Minimum: 59°F
Average: 61°F
Maximum: 63°F
Other useful seasonal weather averages in december:
- Outside temperature: 55°F to 66°F
- Most common weather: "Clear/Sunny"
- The wind blows at 8.1mph
- It rains a total of 2.5in, over 3 day(s).
Should we swim in San Diego in december?
No... The water temperature in San Diego in december is cold
Swimming in San Diego in december is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average sea temperature of 61°F (minimum: 59°F - maximum: 63°F).
Note also that in december, the climate is good with an average outside temperature of 60°F, 2.4in of precipitation (over 3 days) and 64.54 % humidity.
Water and normal seasonal temperatures in San Diego in december
| December | |||
| Average sea temperature | 61°F | ||
| Minimum sea temperature | 59°F | ||
| Maximum sea temperature | 63°F | ||
| Average outside temperature | 61°F | ||
| Maximum outside temperature | 67°F | ||
| Minimum outside temperature | 56°F | ||
| Wind speed | 8.7mph | ||
| Wind temperature | 56°F | ||
| Precipitation | 2.5in | ||
| Number of days of rain | 3 jour(s) (9%) | ||
| Humidity | 65% | ||
| Visibility in kilometers | 9.72km | ||
| Cloud cover | 24% | ||
| Our opinion | cold swimming |
Chart of the tides in december 2026
Tide times in december 2026 in San Diego
Swim elsewhere in California in december
| City | Average T° | Min. T° | Max. T° | Our opinion | Los Angeles in december | 61°F | 63°F | cold swimming | San Francisco in december | 55°F | 57°F | freezing swimming | Big Sur in december | 56°F | 58°F | freezing swimming | Carmel-by-the-Sea in december | 56°F | 58°F | freezing swimming | Eureka in december | 53°F | 57°F | freezing swimming | Half Moon Bay in december | 55°F | 57°F | freezing swimming | Hollywood in december | 61°F | 62°F | cold swimming | Malibu in december | 60°F | 61°F | cold swimming | Mendocino in december | 54°F | 58°F | freezing swimming | Morro Bay in december | 58°F | 60°F | freezing swimming | Oakland in december | 55°F | 57°F | freezing swimming | Pismo Beach in december | 58°F | 60°F | freezing swimming | San Clemente in december | 61°F | 63°F | cold swimming | Santa Barbara in december | 59°F | 60°F | freezing swimming | Santa Cruz California in december | 56°F | 58°F | freezing swimming | Santa Monica in december | 61°F | 63°F | cold swimming | Ventura in december | 59°F | 61°F | cold swimming | Bodega Bay in december | 54°F | 57°F | freezing swimming | Carlsbad in december | 61°F | 63°F | cold swimming | Huntington Beach in december | 61°F | 63°F | cold swimming |